Lithium/Polymer Electrolyte Interfacial Instability.
Abstract
The stability of evaporated lithium with polyethylene oxide (PEO), polypropylene oxide (PPO) and oxyethlylene-oxymethylene copolymer, doped with lithium perchlorate, in ultra thin film cells, was studied by impedance spectroscopy at room temperature. The formation and growth of a passivating film at the lithium/PEO interface has been observed, under open circuit conditions. The thickness of the passivating layer was estimated by assuming the dielectric constant of the interfacial product. Compared to PEO, a more extensive interfacial reaction was observed in the case of PPO. A very fast interfacial reaction was observed between lithium and amorphous copolymer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 26, 1987
- Accession Number
- ADA187164
Entities
People
- John R. Owen
- K. A. Murugesamoorthi
Organizations
- University of Salford